Window-ventilator.



B. W. MOTT.

WINDOW VBNTILATOR. APPLICATION FILED AUG. 10, 1912.

UNITED STATES PATENT orrioa.

BURKE W. MOTT, OF.NORFOLK, VIRGINIA.

' WINDOW-.VENTIL-ATQR.

Specification of Letters Patent.

. Patented Apr. 1, 1913.

Application filed. August 10, 1912. Serial No. 714,369.

panying drawings, in which Figure 1 is a front'elevation ofa window frame. provided with my ventilatin device; Fig. 2 a vertical sectional view of t e same;

Fig. 3' a vertical sectional view taken through the line 33 of Fig. 2;- and Fig. 4

a detail horizontal sectional View through one of the brackets.

' dow frame.

- inwardly extending plate d. The plate pro-- The object of this invention is to provide a simple device which will not obstruct the view through the window and which at the same time is capable-of. being adjustable to permit any desired ventilation of the room within the limits of the device without permitting a direct draft or blast of air entering the room to discommode the occupants thereof or to disturb papers, etc, as more fully hereinafter set forth.

The letter a designates a plate of glass approximately the width of the window and having a depth approximately equal to the height of the two brackets employed for supporting this glass plate across the win- The two brackets consist each of a plate 1) approximately segment-shaped and-provided with holes along one vertical edge for the reception of the fastening screws 0, by which screws the plate is fastened adjacent to the lower sash of the window and against the inner face of the win dow frame. The lower end of the plate rests upon the window sill and the upper or wider edge of the plate. is provided with an jects a suitable distance into the room and its inner upright .edge is provided with a laterally bent flange 0 extending its; entire length. The flange d terminates short of the upper end of the flange e and thus leaves a:

throat-like pasage f therebetween. Each plate is provided with an arcuate slot 9 near its upper end. Pivoted to the inner face of each plate at the lower end thereof, by a rivet h is a bar 2' U-shaped in cross-section, the hollow side of the bar facing toward its companion bar at the opposite side of the window and the closed side of the bar lying against the adjacent face of the bracket plate b. This bar extends to I a point close to the under face of the 'top curved flange d and is adapted to swing inwardly and outwardly upon the bracket plate. One or more bow springs j are mounted in the channel of each bar, these springs being carried by the outer wall of the channel and normally tending to press their convex faces against the opposite wall of the channel. These springs may be af fixed to the outer wall of the channel in any suitable manner; for instance they may be made integral with the channel wall by being cut and pressed therefrom, leaving longitudinal openings k in said outer wall. Attached. to the upper end of each channel bar is an outwardly extending ear Z whichv is bent in such manner as to lie closely against the adjacent face of the bracket plate and which carries a clamp screw m working through the slotg, whereby the channel bars may be adjusted to any angu'larity desired and fastened in that position. After the brackets are fastened in place upon the window, the channel bars are swung outwardly against the flange e to bring their channels in alinement with the throats f. The pane of glass is then slid downwardly edgewise into the channels, underthe springs until the lower edge of the plate rests upon the window sill and the upper edge of the plate is below the top flange d. Then the, glass plate and the channel bars may be adjusted to the desired position and fastened at that point.

Itwill be observed that glassof any thicknesswithin the limits of the device maybe used-with the brackets and it will be also observed that whenthe glass has been inserted and the bars adjusted away from'the throats f the glass will be locked against withdrawal.

Having thusdescribed my invention,

ecure by longitudinal flange along its upright inner' edge, a throat-like passage being provided between these two flanges and each plate being provided with an arcuate slot near its upper. edge, a channel bar pivoted at its v v lower end to each of said plates on the inner face thereof, means being provided in each bar for retaining a glass plate and means being provided on each bar for engagement with the aforesaid slot to lock the bar in its adjusted position, and a plate of glass having its edges lying in the channels of said ars.

2. In a device of the class set forth, the combination of a pair of bracket plates adapted each to be attached to a' window frame and each carrying a swinging channel bar open at its upper end, means for fastening the channel'bars in'their adjusted posi-- tions on said plates, and a plate of glass having its opposite edges inclosed in said channel bars and adapted to be withdrawn therefrom through the upper open ends thereof. 7 t

3. In a device of the class set forth, the

combination of a pair of bracket plates adapted each to be attached to a window frame and each carrying a swinging channel bar open at its upper end, means for fastening the channel bars in their adjusted positions on said plates, and a plate of glass having its opposite edges inclosed in said channel bars and adapted to be withdrawn therefrom through the upper open ends thereof, said channel bars having their chan "nels wider than the thickness of the glass and springs being rovided in the channel bars for clamping t e inclosed edges of the lass. g In testimony whereof I hereunto ailix my signature in the presence of two witnesses. BURKE W. MOTT. Witnesses:

VMELVIN Enmsnn,

R; H. Somme.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C." 

